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Code Issues Releases Wiki Activity

ircd::json::tuple: Various keys suite cleanup / simplify.

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This commit is contained in:
Jason Volk 2019-01-17 13:15:02 -08:00
parent 1eca2cafb3
commit c6be968111
1 changed files with 20 additions and 21 deletions
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41
include/ircd/json/tuple/keys.h
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@ -34,7 +34,7 @@ struct ircd::json::keys
operator vector_view<const string_view>() const;
constexpr keys(const selection & = {});
keys(const selection & = {});
};
/// Selection of keys in a tuple represented by a bitset. Users generally
@ -45,15 +45,15 @@ struct ircd::json::keys<tuple>::selection
:std::bitset<tuple::size()>
{
template<class closure>
constexpr bool until(closure &&function) const;
constexpr bool until(closure&& function) const;
template<class closure>
constexpr void for_each(closure &&function) const;
constexpr void for_each(closure&& function) const;
template<class it_a,
class it_b>
constexpr it_a transform(it_a it, const it_b end) const;
template<class it>
constexpr it transform(it, const it end) const;
// Note the default all-bits set.
constexpr selection(const uint64_t &val = -1)
:std::bitset<tuple::size()>{val}
{}
@ -106,30 +106,29 @@ struct ircd::json::keys<tuple>::exclude
//
template<class tuple>
template<class it_a,
class it_b>
constexpr it_a
ircd::json::keys<tuple>::selection::transform(it_a it,
const it_b end)
template<class it>
constexpr it
ircd::json::keys<tuple>::selection::transform(it i,
const it end)
const
{
this->until([&it, &end](auto&& key)
this->until([&i, &end](auto&& key)
{
if(it == end)
if(i == end)
return false;
*it = key;
++it;
*i = key;
++i;
return true;
});
return it;
return i;
}
template<class tuple>
template<class closure>
constexpr void
ircd::json::keys<tuple>::selection::for_each(closure &&function)
ircd::json::keys<tuple>::selection::for_each(closure&& function)
const
{
this->until([&function](auto&& key)
@ -142,7 +141,7 @@ const
template<class tuple>
template<class closure>
constexpr bool
ircd::json::keys<tuple>::selection::until(closure &&function)
ircd::json::keys<tuple>::selection::until(closure&& function)
const
{
for(size_t i(0); i < tuple::size(); ++i)
@ -158,7 +157,6 @@ const
//
template<class tuple>
constexpr
ircd::json::keys<tuple>::keys(const selection &selection)
{
selection.transform(this->begin(), this->end());
@ -179,7 +177,7 @@ const
{
const auto &start
{
begin(*this)
this->begin()
};
const auto &stop
@ -187,7 +185,8 @@ const
start + this->count()
};
return std::find(start, stop, key) != stop;
assert(!empty(key));
return stop != std::find(start, stop, key);
}
template<class tuple>